Plant for the vertical molding of concrete work



Dec. 9, 1930. H. FABRE 1,784,422

PLANT FOR THE VERTICAL MOLDING OF CONCRETE WORK Filed Aug. '7, 1928 2Sheets-Sheet l F a E s 5 a 5 i 5 M3 4 ligz].

H :PPoLyTE Fun:

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A. Attorney Patented Dec. 9, 1930 UNEE STATES HIPPOLYTE FABRE, OFCLAMART, FRANCE PLANT FOR THE VERTICAL MIOLDING OF CONCRETE WORKApplication filed August 7, 1928, Serial No. 298,077, and in FranceAugust 9, 1927.

This invention relates to apparatus for building concrete walls and hasbeen so devised as to allow of using in connection with reinforcedconcrete the same methods of building which are employer for raisingized by the fact that the panels forming the sheeting and between whichthe concrete is received are combined with mechanical lifting meansacting from outside, so that the molded wall can be of any thicknesshaving due regard to the resistance of materials and the loads which areto be supported.

1n the accompanying drawing and by way of example:

Fig. 1 is a cross sectional view of the apparatus.

Fig. 2 is a corresponding part longitudinal view.

Fig. 3 shows, on a larger scale, a detail of mounting.

The apparatus, forming the object of the present invention, is supportedby a double horizontal cross-beam 1 bearing upon two poles 2. Everyapparatus comprises two or more similar supporting systems. All thesesystems are tied together at their upper parts at 3.

In its main parts, the apparatus for molding concrete is composed:

a. Falscworlc casing r sheeting Of two vertical falsework casings 4-,

This casing made of boards or planks connected together upon cross beamsor uprights 6 forming the frame of the falsework casing and the spacingof which can be varied according to the length of the mold and thethickness of the boards. These vertical casings will be hereinaftertermed sheeting and the operation consisting in putting them in positionfor molding the concrete will be called the sheeting operation while thereverse operation will be called the removal of the sheeting.

The uprights 6 of the sheeting project at their upper part beyond thefalsework casings 4, ceive:

1. A sheeting spacing cross beam T resting upon the falsework casingproper and carrying two small rings 8 into which are threaded thefastening bolts 9 (Fig.

2. Above this member 7 is arranged the bolt 9 by means of which thecasings r, .3 may be secured against the member 7 his bolt 9 isintroduced into a hole provided in each of the uprights 6 of thesheeting and into the two small rings 8 of the member '4'. The fasteningcan vary according to the width which is to be allowed for the spacingcross member and which naturally depends upon the thickness of concretewhich is to be obtained.

One end of the bolt 9 is provided with a threaded portion which, bymeans of a nut 10, will allow of varying the useful length of the bolt9. The other end of bolt 9 is flattened for about half its length andthe end of this flattened part carries an eyelet 11. This flat partpasses between two parallel arms of a cap 12 which are rounded at theirfree end according to a certain radius, so as to form a cam 13; theirother end is fixed to a controlling lever 14. Between the two parallelarms of the cap 12 is secured a pin 15 through which freely passes theeyelet 11 of the flat part of the fastening bolt 9.

The free and rounded part of this cam .13 bears upon the upright 6 ofthe sheeting.

When the lever arm 14 of cap 12 is brought to horizontal position, therounded part 13 of thetwoarms will press against the eyelet 11 of thebolt 15. and push back the upright 6, pulling upon the bolt 9 and thusautomatically7securing the fastening of the sheeting 4:, 5,

This projection is adapted to re- 7). Attendance bridge To the lower endof the upright 6 4e, is vertically secured one of the arms 15 of a hinge16 having a removable pintle; the other arm 17 of the said hinge issecured to an attendance bridge or temporary gangway 18 which is capableof being angularly displaced about the pintle of the hinges 16.

In the position of use, the plane of bridge 1 a platform for theworkman.

The internal sleeper of bridge 18 bears exactly against all the uprights6 of the sheeting and acts as a stiffener for the lower part of same;the plates 7 and fastening bolts 9 act as stitl'eners for the upper partthereof. For this reason broad fastening plates are provided in order toavoid a parallel shifting of the two sheeting members 4, 5.

In order to allow bridge 18 to remain in a horizontal position, itsexternal sleeper is suspended from the upper part of the uprights 6through the medium of a supporting rod 19. 20.

The part 19 of this rod carries, at its lower end, an eye 21 whichpasses through the eye 22 of a bolt secured to the external sleeper ofthe bridge 18. The other end of part 19 normally bent to form a hookwhich can slide in a groove 23 provided in one end of the flat part 20whose other end is secured to the corresponding upright 6 of thesheeting frame.

To the external sleeper of the bridge 18 is also secured, by means ofeyelet bolts, the position of which can vary, the lifting cable 24through the medium of an inverted V- shaped lifting rod 25. This formhas been adopted not only because it permits of having two fasteningpoints to the bridge 18 but also for the purpose of reducing the freeoverhang of the external sleeper of this bridge and of reducing its sizewhile maintaining its rigidity.

Adjacent each supporting pole 2, this external sleeper of the bridge 18is provided upon its vertical external face with a shoe 26 whoseexternal face is inclined. This face acts as a bearing for a wedge 27interposed between the shoe 26 and the corresponding pole 2.

This wedge 27 serves to press the bridge 18 and consequently thesheeting against the part of concrete already finished, as hereinaftermore fully described.

The wedges 27 are sufliciently large to leave play between the sheetingand the poles 2.

0. Suspension of the apparatus The suspension means for the moldingapparatus can be divided into two parts, one of which is fixed andpermits the filling and setting of the concrete and the other of whichis movable and provides for mounting of the mold.

1. The stationary part comprises a bar of iat iron 28, the sizes ofwhich vary according to the height of the wall which is to be *aised.This bar is adapted to be used as a support and to serve as a guide forthe apparatus.

It is for this purpose provided with holes 29 the spacing of which issubstantially equal to of H (H representing the height of the sheetingor height of the mold). Into these holes 29 is secured, according as theraising proceeds, the keying or nogging support formed of two sheet ironplates 30 (one upon each face of the guiding support) which are in theform of a harpoon the upper part of rhich provided with a h oletlllOllQh which passes a bolt 31 securing the two said plates 30 to thesupporting guide 28. In the upper part of the swell of said harpoon 30are provided two recesses 32, one on each side of the bolt hole 31.These recesses 32 are adapted to receive during the operation thesuspension pins of the small keying or nogging apparatus.

This apparatus consists of two pairs of duplicate iron blades 33. Thetwo blades 33 of each pair connected together at their upper parts bysuspension pin 34 the portion of which comprised between the two blades,enters during the operation of mounting into the cavity or recessprovided in the upper part of the swell. or harpoon 3t), and at theirlower end, the two blades carry a pin 35 which secures this keying ornoggin g apparatus, through the medium of two stirrups 86, to one of theuprights (i of the sheeting frame.

The two pairs of double blades are con nected together by a coil spring3." which serves to maintain the two suspension pins illin the cavitiesor recesses 32 of the harpoeu 80.

These two springs 3? allow the two pairs of double blades 3;; to moreapart one from the other when meeting the swell of i harpoon 30 whilethe apparatus is erected or fitted up.

The se 1d part of ti 2 rains scape is used for the f the atus.

ne (ullulffilb of a lifting cable 2% ten-ed to each one of the twoliftin 20 secured to each end of the two fill it. bridges 18. Thisdouble cable is for ach one of the cables secured en .2 i ce of thesheeting to the ends of the two bridges 18. They are of course separateone from the other, their connection being etlected by means of twosmall tackles acting as a guide, coupled together upon two spindles.

The position of this device can be varied: in case the mold is to bedisplaced horizontally. the same is secured to the upper cross member 1of the two supporting poles 2 so as to leave space for the cores ofreinforced or armoured concrete. On the contrary if, a? will be the moreoften the case, the mold rises in a vertical direction, the guide isplaced close to the mold and is then secured to the latter by a cable,one end of which is fixed into the eyelet 39 of the said device, theother end bein attached to one of the fastening bolts 9 of the moldingapparatus, with a View of reducing the required length of the doublecable.

These two lifting cables 24, after having passed between the said twotackles 38 are brought nearer the one or the other and pass over thetransmission pulleys 4O arranged upon the supporting frame of theapparatus.

The said transmission pulleys 40, as shown in the figure, first engage adouble cable then a single cable, so that it can be wound aboutthepulley secured to the lower part and between the two poles 2 whichsupport the mold. The said winding pulley 41 controlled by means of alever comprises a ratchet wheel 43.

The bifurcated lever 42 is provided, between its arms, with a stop orcatch 44 which, under the action of a spring 45, secured to each of thelever arms, meshes with the teeth of the ratchet wheel 43.

This ratchet wheel is moreover combined with a pawl 46 articulated tothe poles 2.

Erection of the plant The supporting poles 2 are first raised anddisposed within a' few centimeters of each other. The concrete cores arethen suspended between the poles 2 and the position of the wall to beraised. The only iron parts which require to 'be positioned in a veryadequate manner consist of the keying or nogging guiding supports 28.

One of the ends of this vertical core must be embedded in the foundationconcrete so as to maintain the iron parts in the position they are tooccupy. Then, the two sheeting planks 4, 5, between which the concretewill be cast are put in position vertically and in parallelism. For thefirst sheeting, wooden cross-bars are placed upon the foundationconcrete, these cross-bars having the same width as the molding in orderto maintain the required spacing in the lower part. In the upper part ofthe sheeting are placed, the crossbar 7 and the fastening bolts 9.

Before these bolts are fastened tightly, the rotation and fastening axisof the blade keying or nogging apparatus 33 is put into position and thebolts are then tightly fastened. The bridge 18 for each sheeting contentis then put in place by positioning the hinge pin 16 and hooking thesupporting rods 19. The lifting cables 24 are then caused to pass intothe grooves of pulleys 38, 40. The fastening wedges 27 are then appliedand driven into position, so that the lower part of the mold will betightly pressed against the spacing cross members placed upon thefoundation concrete.

These bottom cross members are only necessary with the first sheetingoperation, as sub- Gravel sand or super-cement concrete is I then castinto the mold.

Operation of the apparatus For the first sheeting, there is no need tomake use of the harpoon 30 acting as a support for the keying or noggingoperation. In the subsequent operations, this harpoon is putin positionand the removal of the molds is then effected by (a) loosening thefastening bolts 9 by a vertical lifting motion of lever 14.

The bolts being loosened, the sheeting planks 4, 5 are dismantledautomatically by virtue of the reaction which takes place due to thefact that the bottom of the sheeting planks is always fastened by thewedges 27.

( 6) Removal of the fastening wedges 27.

(0) Dismantling of falsework or removal of the molds from the concreteby slightly lifting the two bridges or gangways 18 by means of the lever42 acting upon the winding pulley 41, after its pawl or catch 46 hasbeen raised. After the raising of the bridges 18 which have assumed aninclined position relatively to the sheeting planks or boards 4, 5 it isonly necessary to leave the lever 42 to allow the two working bridges 18to reassume their original horizontal position.

In this movement of the bridges 18 which have passed from the horizontalposition to an inclined position, and have: then come back to thehorizontal position, every curved head of the parts 19 of the supportingrods or bars has moved into the mortise 23 of the sloping part of theflat iron member 20 which is secured to the uprights 6 of the sheetingplanks.

The raising or lifting of the bridge 18 stops when the head of the rods19 strikes against the upper part of the mortise 23 which has stoppedits sliding motion. \Vhen the lever 42 of the winding pulley 41 left toitself, the weight of the bridge 18 causes the same to return to itsoriginal horizontal position this being determined by the fact that theheads of the rods 19 have come against the i lower part of thecorresponding mortises 28. The striking of the head of rod 19 againstthe upper part in the frame of the falseworkcasing will. produce animpact upon the to of the sheeting planks which will tend to detach theconcrete from the falsework casing, but the striking against the lowerpart of the mortise 23 will have a much greater effect as it will causea powerful impact upon the sheeting planks 4, 5 which will tend to openof their own accord and consequently leave the concrete. More than twooperations of this kind will seldom be necessary for entirelydismantling the falsework casing or removing the molds.

the preceding operations.

Fir of a the pawl 46 will be returned to pos ion, hy means the lever 42of the winding pulley a1, a pull will be exerted upon the erectingcables 25, the bridges 18 will -ir inclined position. The head of theroos or bars 19 will bear against the top of the lOliiEQS E33 and. attois moment as the cable continue to pull, and the bridge 18 's nolonger capable of pivoting about the hinges 16, the sheeting planks e, 5are drawn tln ough the medium of their hinges l6. ihe sheeting 4, 5 willtherefore open fronrtl e bottom in pivoting about the fasteni bolts 3.

Vi hen the concrete has sulliciently set, the erection of the apparatusby means of the lever 42 of the winding pulley 41 is proceeded with.Vfhen the apparatus has reached the required height, the keying ornogging device of the sheeting planks i, 5 begins to operate. I

Ihe arms or branches 33 of this apparatus, after having moved apart toallow the pass ing of the rounded part of the harpoon 30, engage theirupper axes 34 into the cavities 32 provided in the upper part or" theharpoon 30, by virtue of the horizontal pulling stress exerted by thetwo coil springs 37.

At this time, it will only be necessary to lift the pawl 46 of thewinding pulley 41 and to release the lever 42 while maintaining the sameso that the bridges 18 will again be positioned at right angles to thesheeting 4i, 5.

The latter, by virtue of the weight of the bridges 18 to which theoverhang is added automatically hear tightly against the concrete whichhas been poured.

The sheeting planks l, 5 being vertically disposed, the only thine to dois to fasten their uppe part which can he done by horizontally movingdown the levers 14.

The fastening of the sheeting a, against the concrete, will be effectedby placing and driving the wedges 27. This driving operation must be asimultaneous one for the wedges of the same end of the mold, as althoughthe concrete already presents a great resistance, it is always necessaryto avoid too sudden shocks which always produce a certain shaking.

At this moment, one can without fear tread upon the attendance bridge organgway 18 for casting the new sheeting content and the placing of thehorizontal cores which can only be put in place at this moment, as theywould otherwise hinder the erection of the mold,

In order to make the angles of walls, it is only necessary to place asheet iron plate against the internal wall of the ends of the sheetingplanks. These sheet iron plates. are of an angular shape, that is to saythey are bent according to the obtain. They can even present two angleswhen it is desired to make a small cut oil corner.

The same can also fixed externally when desired to have a projectingangle.

also easy to fix them from outside in t is desired to obtain aprojecting angle. thin the ano'le 11, it is also easy to obtainreintorceinen i placing two angle plate near the ends or the intizilshectir planks. it is use possible to build wall reinforcing piles byplacing a heat plate at the ends oi? he latter being spaced apart thereinforcing pile. In case are to be provided tor in the ruction (such asdoors, ions, and the like) it is I to disoose a suitable framing twobranches or arms.

cams for adjusting the bolts to clamp the planks, harpoon-shaped memberdepending from the cross piece and having hooks fastened to said palnksat variable elevations in accordance with the progress of theconstruction of the retaining wall, an attendancebridge pivotallymounted on the lower end of said planks and connected at its ends tosaid lifting cables, inc-lined telescopin stays between the planks andlast named bridge to support and allow same to fold against planks, saidattendance bridge having shoes at its ends provided with inclined faces,and wedges for insertion between the uprights of the overhead bridge andsaid inclined faces of the attendance-bridge.

In testimony whereof I afiix my si nature.

HIPPOLYTE mimic.

angle it is desired to

